The State of Web Vitals

Ad networks impact

Ad networks ranked by performance impact.

Field data PhoneDesktopAll Scope All sites Q2 2026 edition · Phone field outcomes
Metric LCP INP CLS
1

At a glance the headline numbers for Ad networks impact

Ad networks ranked by performance impact.

6
Providers ranked
After min-sites filter
17,836
Sites in sample
Combined across all items
0.06
Best CLS (p75)
Google AdSense
The State of Web Vitals · Q2 2026 · 189,915 sites · phone field datacorewebvitals.io/state-of-cwv
2

The ranking sorted by CLS at p75, fastest first

# Provider CLS p75 Passing Sites
1 Google AdSense 0.06 84.1%
12,936
2 Google Publisher Tag/GAM 0.10 75.4%
2,834
3 Prebid.js 0.12 71.9%
837
4 Amazon Publisher Services 0.13 69.2%
298
5 Criteo 0.13 72.3%
450
6 Taboola 0.14 68.2%
481
The State of Web Vitals · Q2 2026 · 189,915 sites · phone field datacorewebvitals.io/state-of-cwv
3

Passing CLS per provider which group passes the CLS most often

ProviderSitesPassing CLSp75
Google AdSense 6.8% 12,936 84% 0.06
Outbrain 0% 25 83% 0.07
Index Exchange 0% 45 79% 0.09
Google Publisher Tag/GAM 1.5% 2,834 75% 0.10
Criteo 0.2% 450 72% 0.13
Prebid.js 0.4% 837 72% 0.12
Amazon Publisher Services 0.2% 298 69% 0.13
Taboola 0.3% 481 68% 0.14
Media.net 0% 21 35% 0.92
Good Needs Improvement Poor Sorted best-passing first · median colored by its own rating · pass = good CLS (0.1 at p75) · one value per site

84% of Google AdSense sites pass CLS. Taboola trails 16 points behind, leaving 32% of its sites failing. computed

The State of Web Vitals · Q2 2026 · 189,915 sites · phone field datacorewebvitals.io/state-of-cwv
4

All five vitals at once the whole category without toggling - cell is the pass rate, small number the p75

LCP
INP
CLS
FCP
TTFB
Google AdSense 6.8%
782.4s
84173ms
840.06
721.9s
531.3s
Google Publisher Tag/GAM 1.5%
822.2s
83177ms
750.10
821.6s
69924ms
Prebid.js 0.4%
842.2s
84171ms
720.12
841.6s
73840ms
Taboola 0.3%
752.5s
77194ms
680.14
731.9s
66967ms
Criteo 0.2%
712.6s
73208ms
720.13
712.0s
541.2s
Amazon Publisher Services 0.2%
812.2s
75199ms
690.13
821.6s
77747ms
Index Exchange 0%
862.2s
93151ms
790.09
841.5s
79657ms
Outbrain 0%
831.9s
87141ms
830.07
911.3s
78607ms
Media.net 0%
353.7s
92178ms
350.92
292.6s
131.7s
60%95%+ passing Cell: pass rate, small number = p75 · faded rows: under 100 sites

One row per provider, one column per vital - the cell is the share of sites passing, the small number the p75. No toggling needed to see where the category actually differs.

Google AdSense leads on CLS: 84% of its sites pass. Taboola trails at 68%. computed

The State of Web Vitals · Q2 2026 · 189,915 sites · phone field datacorewebvitals.io/state-of-cwv
Related signals JS libraries (23) → Email marketing (8) → Font services (4) → CDN (15) → Chrome field data from 189,915 sites, representing millions of real page loads · How we measured